Edessa was an ancient city in Upper Mesopotamia, in what is now Urfa or Şanlıurfa, Turkey. It was founded during the Hellenistic period by Macedonian general and self proclaimed king Seleucus I Nicato
The heritage of Roman Edessa survives today in these columns at the site of Urfa Castle, dominating the skyline of the modern city of Urfa.
Silver tetradrachm struck in Edessa by Macrinus 217–218 AD
King Abgar holding the Image of Edessa.
The seizure of Edessa in Syria by the Byzantine army and the Arabic counterattack (Maniakes) from the Chronicle of John Skylitzes.jpg
Marcus Aurelius Antoninus, better known by his nickname Caracalla, was Roman emperor from 198 to 217 AD, first serving as nominal co-emperor under his father and then ruling alone after 211 AD. He was
Edessa
…the gnostic Bardaisan was a native of the city and a philosopher at its court. From 212 to 214 the kingdom was a Roman province. The Roman emperor Caracalla was assassinated on the road from Edessa to Carrhae (now Harran) by one of his guards in 217. Edessa became one of the frontier cities of the province…
Bust of Caracalla, Museo Nazionale Romano, 212–215 AD
Young Caracalla; Hermitage Museum, Saint Petersburg
Bust of Septimius Severus, Caracalla's father (Glyptothek, Munich)
Bust of Septimius Geta, Caracalla's brother (Louvre, Paris)